Seal for large roller bearing

Abstract

The invention relates to a seal for a large roller bearing for sealing a joint between two adjacent ring segments or ring parts of the roller bearing, wherein at least two mutually spaced apart sealing limbs of a rubber elastic and/or yielding sealing material for sealing insertion into grooves that are formed at both sides of the joint in ring segments or ring parts that are adjacent to one another and a connection section connecting the sealing limbs and composed of a rubber elastic and/or yielding sealing material to span said joint.

We claim: 
     
       1. A seal for a large roller bearing for sealing a joint between two adjacent ring segments or ring parts of the roller bearing, wherein the seal comprises:
 at least two mutually spaced apart sealing limbs comprising a rubber elastic and/or yielding sealing material for sealing insertion into sealing grooves formed at both sides of the joint in ring segments or ring parts adjacent to one another; 
 a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic and/or yielding sealing material that spans the joint; and 
 a desired stretching section in a region of the connection section, 
 wherein the desired stretching section has a greater elasticity and/or a smaller stretching stiffness than adjacent sealing sections and/or the at least two mutually spaced apart sealing limbs, 
 wherein the desired stretching section has a stretching fold contoured in a channel shape or in a bead shape, and 
 wherein the stretching fold is configured to be drawn flat by drawing the at least two mutually spaced apart sealing limbs apart. 
 
     
     
       2. The seal of  claim 1 , wherein the at least two mutually spaced apart sealing limbs and the connection section form an elongate section member having a U-shaped cross-section, and wherein the connection section is interposed between the at least two mutually spaced apart sealing limbs. 
     
     
       3. The seal of  claim 2 , wherein the desired stretching section has a reduced wall thickness that is reduced in comparison with the wall thickness of adjacent seal sections and/or in comparison with the wall thickness of the at least two mutually spaced apart sealing limbs. 
     
     
       4. The seal of  claim 1 , wherein the at least two mutually spaced apart sealing limbs and the connection section are formed integrally as a single piece with material homogeneity and/or of the same elastic sealing material, and wherein the same elastic sealing material comprises a plastic material and/or rubber material. 
     
     
       5. The seal of  claim 1 , wherein the connection section is configured to permit and compensate deformations and relative movements of the two adjacent ring segments relative to one another so that the joint remains sealed on widening and/or relative movements with respect to one another. 
     
     
       6. The seal of  claim 1 , wherein the at least two mutually spaced apart sealing limbs have laterally projecting sealing lips that lie at the at least two mutually spaced apart sealing limbs and at groove walls adjacent thereto on an insertion of the at least two mutually spaced apart sealing limbs into the sealing grooves. 
     
     
       7. The seal of  claim 1 , wherein the at least two mutually spaced apart sealing limbs have a height less than 75% of the width B of the connection section. 
     
     
       8. The seal of  claim 1 , wherein the at least two mutually spaced apart sealing limbs have a height less than 50% of the width B of the connection section. 
     
     
       9. The seal of  claim 1 , wherein the desired stretching section has a reduced wall thickness that is reduced in comparison with the wall thickness of adjacent seal sections and/or in comparison with the wall thickness of the at least two mutually spaced apart sealing limbs. 
     
     
       10. A seal for a large roller bearing for sealing a joint between two adjacent ring segments or ring parts of the roller bearing, wherein the seal comprises:
 at least two mutually spaced apart sealing limbs comprising a rubber elastic for sealing insertion into sealing grooves formed at both sides of the joint in ring segments or ring parts adjacent to one another; 
 a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic that spans the joint; and 
 a desired stretching section in a region of the connection section, wherein the desired stretching section has greater elasticity and smaller stretching stiffness than both adjacent portions of the connection section and the at least two mutually spaced apart sealing limbs, and 
 the desired stretching section has a stretching fold contoured in a channel shape or in a bead shape, and wherein the stretching fold is configured to be drawn flat by drawing the at least two mutually spaced apart sealing limbs apart. 
 
     
     
       11. The seal of  claim 10 , wherein the desired stretching section has a reduced wall thickness that is reduced in comparison with the wall thickness of adjacent seal sections and/or in comparison with the wall thickness of the at least two mutually spaced apart sealing limbs. 
     
     
       12. The seal of  claim 10 , wherein the desired stretching section has a reduced wall thickness that is reduced in comparison with the wall thickness of adjacent seal sections and/or in comparison with the wall thickness of the at least two mutually spaced apart sealing limbs. 
     
     
       13. A roller bearing in the form of an open centered large roller bearing, comprising:
 two roller races rotatable with respect to one another, wherein at least one of the roller races comprises ring segments or ring parts adjacent to one another at a joint; and 
 a seal for sealing the joint, wherein the seal comprises:
 at least two mutually spaced apart sealing limbs comprising a rubber elastic and/or yielding sealing material for sealing insertion into a respective sealing groove at both sides of the joint in ring segments or ring parts adjacent to one another, wherein the respective sealing groove at both sides of the joint is open toward the outer side; and 
 a connection section connecting the at least two mutually spaced apart sealing limbs and comprising a rubber elastic and/or yielding sealing material that spans the joint, 
 wherein the at least two mutually spaced apart sealing limbs of the seal are sealingly seated in the respective sealing groove at both sides of the joint and with the connection section of the seal spanning the joint. 
 
 
     
     
       14. The roller bearing of  claim 13 , wherein the joint extends in a plane containing the axis of rotation of the roller bearing, and wherein the seal is seated on a peripheral surface of one of the roller races. 
     
     
       15. The roller bearing of  claim 14 , wherein the at least two mutually spaced apart sealing limbs are configured to be inserted into the respective sealing groove at both sides of the joint while elastically deformed and be clampingly held in the respective sealing groove at both sides of the joint. 
     
     
       16. The roller bearing of  claim 13 , wherein the joint extends in a plane perpendicular to the axis of rotation of the roller bearing, and wherein the seal is seated on a peripheral surface of one of the roller races. 
     
     
       17. The roller bearing of  claim 16 , wherein the at least two mutually spaced apart sealing limbs are configured to be inserted into the respective sealing groove at both sides of the joint while elastically deformed and be clampingly held in the respective sealing groove at both sides of the joint. 
     
     
       18. The roller bearing of  claim 13 , wherein the at least two mutually spaced apart sealing limbs are configured to be inserted into the respective sealing groove at both sides of the joint while elastically deformed and be clampingly held in the respective sealing groove at both sides of the joint.